B1205

DTC B1205 or DTC indicator H: Climate Control Unit Lost Communication with Gauge Control Module (VSP/NE message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A.

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then ON (II).
3. Do the self-diagnostic with the HDS or climate control unit.
4. Check for DTCs.

Are DTC B1205 or H indicated?

YES - Go to step 5.

NO - The system is OK at this time, check for loose wires or poor connections on the gauge control module and climate control unit circuit.

5. Check for DTCs with the HDS.

Are DTC B1008, B1011, B1032, B1906 and B1205 also indicated?

YES - Go to step 6.

NO - The climate control unit is faulty. Replace the climate control unit.

6. Select UNIT INFORMATION in the BODY ELECTRICAL menu.
7. Select CONNECTED UNIT in the UNIT INFORMATION menu.

Is gauge control module detected?

YES - Substitute a known-good gauge control module, and recheck. If the symptom/indication goes away, replace the gauge control module.

NO - Go to step 8.

8. Disconnect under-dash fuse/relay box connector Q (16P).
9. Disconnect the gauge control module 36P connector.




10. Check for continuity between under-dash fuse/relay box connector Q (16P) terminal No. 6 and the gauge control module 36P connector terminal No. 30.

Is there continuity?

YES - Go to the gauge control module input test. Control Unit Input Test

NO - Repair open in the wire between the MICU and the gauge control module.